Water resource recovery coupling microalgae wastewater treatment and sludge co-digestion for bio-wastes valorisation at industrial pilot-scale

Avila, Romina; Justo, Álvaro; Carrero, Elvira; Crivillés, Eudald; Vicent, Teresa; Blánquez, Paqui

doi:10.1016/j.biortech.2021.126080

Cited by 26 publications

(10 citation statements)

References 39 publications

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“…An experiment using solar-dried biomass of microalgae as a fertilizer with lettuce plants was carried out [ 90 ]. It was observed that the growth rate of the lettuce showed a 121% increase compared to the control (commercial fertilizer); in addition, when the amount of ammoniacal nitrogen was similar in the commercial fertilizer and the dry biomass of microalgae, the total nitrogen was 3.5 times higher in the dry biomass of microalgae.…”

Section: Microalgae As Biofertilizers In Modern Agriculturementioning

confidence: 99%

Microalgae-Based Biotechnology as Alternative Biofertilizers for Soil Enhancement and Carbon Footprint Reduction: Advantages and Implications

et al. 2023

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Due to the constant growth of the human population and anthropological activity, it has become necessary to use sustainable and affordable technologies that satisfy the current and future demand for agricultural products. Since the nutrients available to plants in the soil are limited and the need to increase the yields of the crops is desirable, the use of chemical (inorganic or NPK) fertilizers has been widespread over the last decades, causing a nutrient shortage due to their misuse and exploitation, and because of the uncontrolled use of these products, there has been a latent environmental and health problem globally. For this reason, green biotechnology based on the use of microalgae biomass is proposed as a sustainable alternative for development and use as soil improvers for crop cultivation and phytoremediation. This review explores the long-term risks of using chemical fertilizers for both human health (cancer and hypoxia) and the environment (eutrophication and erosion), as well as the potential of microalgae biomass to substitute current fertilizer using different treatments on the biomass and their application methods for the implementation on the soil; additionally, the biomass can be a source of carbon mitigation and wastewater treatment in agro-industrial processes.

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Section: Microalgae As Biofertilizers In Modern Agriculturementioning

confidence: 99%

Microalgae-Based Biotechnology as Alternative Biofertilizers for Soil Enhancement and Carbon Footprint Reduction: Advantages and Implications

et al. 2023

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“…Waste utilisation and algal biomass valorisation is considered promising to attain value added metabolites in an energy efficient manner. Avila et al ( 2022 ) evaluated mono and co-digestion methods to remediate winery waste in a circular bioeconomy perspective. Comprehensive waste utilisation and minimisation can be achieved in co-digestion methods where the treated water and the dried residual contents can be used for irrigation and as plant fertilizer respectively.…”

Section: Latest Technologies In Algal Biorefinery: Sustainable Routes...mentioning

confidence: 99%

Valorisation of algal biomass to value-added metabolites: emerging trends and opportunities

et al. 2022

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Algal biomass is a promising feedstock for sustainable production of a range of value-added compounds and products including food, feed, fuel. To further augment the commercial value of algal metabolites, efficient valorization methods and biorefining channels are essential. Algal extracts are ideal sources of biotechnologically viable compounds loaded with anti-microbial, anti-oxidative, anti-inflammatory, anti-cancerous and several therapeutic and restorative properties. Emerging technologies in biomass valorisation tend to reduce the significant cost burden in large scale operations precisely associated with the pre-treatment, downstream processing and waste management processes. In order to enhance the economic feasibility of algal products in the global market, comprehensive extraction of multi-algal product biorefinery is envisaged as an assuring strategy. Algal biorefinery has inspired the technologists with novel prospectives especially in waste recovery, carbon concentration/sequestration and complete utilisation of the value-added products in a sustainable closed-loop methodology. This review critically examines the latest trends in the algal biomass valorisation and the expansive feedstock potentials in a biorefinery perspective. The recent scope dynamics of algal biomass utilisation such as bio-surfactants, oleochemicals, bio-stimulants and carbon mitigation have also been discussed. The existing challenges in algal biomass valorisation, current knowledge gaps and bottlenecks towards commercialisation of algal technologies are discussed. This review is a comprehensive presentation of the road map of algal biomass valorisation techniques towards biorefinery technology. The global market view of the algal products, future research directions and emerging opportunities are reviewed.

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“…Interestingly, the potential of living microalgae to alleviate saline–alkaline stresses ( Ma et al., 2022 ) and that of a soil-surface biofilm to suppress N loss through NH 3 volatilization ( de Siqueira Castro et al., 2017 ) have been reported. Circular economy projects using microalgae for wastewater purification and farmland fertilization in a cattle farm ( Lorentz et al., 2020 ) and winery company ( Avila et al., 2022 ) have been tested.…”

Section: Applications Of Microalgae For Nutrient Recyclingmentioning

confidence: 99%

Physiology of microalgae and their application to sustainable agriculture: A mini-review

2022

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Concern that depletion of fertilizer feedstocks, which are a finite mineral resource, threatens agricultural sustainability has driven the exploration of sustainable methods of soil fertilization. Given that microalgae, which are unicellular photosynthetic organisms, can take up nutrients efficiently from water systems, their application in a biological wastewater purification system followed by the use of their biomass as a fertilizer alternative has attracted attention. Such applications of microalgae would contribute to the accelerated recycling of nutrients from wastewater to farmland. Many previous reports have provided information on the physiological characteristics of microalgae that support their utility. In this review, we focus on recent achievements of studies on microalgal physiology and relevant applications and outline the prospects for the contribution of microalgae to the establishment of sustainable agricultural practices.

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Water resource recovery coupling microalgae wastewater treatment and sludge co-digestion for bio-wastes valorisation at industrial pilot-scale

Cited by 26 publications

References 39 publications

Microalgae-Based Biotechnology as Alternative Biofertilizers for Soil Enhancement and Carbon Footprint Reduction: Advantages and Implications

Microalgae-Based Biotechnology as Alternative Biofertilizers for Soil Enhancement and Carbon Footprint Reduction: Advantages and Implications

Valorisation of algal biomass to value-added metabolites: emerging trends and opportunities

Physiology of microalgae and their application to sustainable agriculture: A mini-review

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